Q
All of the following statements about Type II silicon impression material are true EXCEPT_______________?
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A
A. They evolve hydrogen when cast if they are not fully cured
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B
B. They exhibit a very low setting shrinkage
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C
C. They have a lower tear resistance than polysulphide rubbers
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D
D. They set by condensation polymerisation
Correct Answer:
D. D. They set by condensation polymerisation